Infinite have released an updated version of Jailbreak, their entry to the second Passion MSX2 contest. This release fixes an invisible block in Level 1 and a more severe bug in Level 4, which for some odd reason loaded the map of Level 2 with the data of Level 4, making Jailbreak an impossible game to finish.

Is that 1.02? I've got a rom with a different hash.. It looks like I downloaded it from the site in 2013, there's also a version.txt containing: Jailbreak 1.02 (19 november 2010)
SHA1: 35183cc25784436973ab4f2667a64e21ab63b019

Anyway, perhaps Infinite can shed some light on the defunct website and/or share it themselves?